Dogless knitting machine



. 1,613,465 n 2 w. LARKIN DOGLESS KNITTING MACHINE Filed May 15, 1925 2 she ts-sheen 1 Jan. 4 192 w. LARKIN DOGLESS KNITTING MACHINE 2. Sheets-Sheet 2 Filed May 15, 1925 Patented Jan. 4, 1927.

entree STATES" PATENT arms,

WALTER LARKIN OF NORRISTOW'N, PENNSYLVANIA, ASSIGNOR TO FIDELITY IVIA- CHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA. A CORPORATION OF DELA- W'ARE.

DOGLESS KNITTING MACHINE.

Application filed May 15, 1925. Serial No. 30,559.

One object of this invention is to provide a relatively simple, substantial device for removably supporting the dial post and dial of a rib knitting machine in such manneras to permit of the feeding thereto of one or more threads, the arrangement being such as to permit of the convenient vertical adjustment of the dial and the provision of a relatively long vertical support for the dial post. v

A further object of the invention, is to provide a dogless attachment whose construction shall be such as to avoid the necessity formovable pawls or dogs customarily employed to prevent rotation of the dial post while permitting the free delivery to the needles of the thread res quired for knitting.

These objects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying draw-v ings, in which:

Figure l is a vertical section illustrating r the detail construction of a dogless attachment constructed in accordance \with my invention, and

Fig. 2 is a horizontal section on the line 2- 2, Fig. 1.

In the above drawings, 1 represents a portion of the fixed structure of a rib lrnltting machine including upwardly PIOJQCflIlg posts 2 on which are rigidly mounted the supporting arms 4 of a circularly curved base piece 3. The knitting machine includes a relatively stationary needle cylinder 5 and a rotary cam ring 6 carried upon a rotary structure 7 from opposite sides of which two posts 8 project upwardly and are engaged at their upper ends with the arms 9 of a ring.

Mounted to cooperate with the cylinder is a dial 11 carried adjacent the lower end of a dial post 12 which serves to rotatably support the dial cam ring 18.- The latter is rotated synchronously with the cylinder cam ring 6 by suitable connections, (not shown).

In accordance withmy invention I'monnt on the top of the ring and rigidly fix to the same, by means such as the screw 14:. a bevel gear 15 and provide this with a relatively long hub 16 extending down and laterally bracing the dialpost 12' to within a relatively short distance of the top of the dial cam ring 13. This gear has a vertically extending passage 17 for the thread or yarn to be delivered to the needles of the machine and its periphery has a bearing in an annu lar portion 18 'of a member 19 mounted on and rigidly fastened to the base piece This member also provides a bearing for the hub 20 of a second bevel gear 21 rotat able on an axis at right angles to the center line of the gear 15 with which its teeth engage. passage 22 extendsthrough this hub 20 and through the gear 21 in a line inclined to its axis of rotation, said passage preferably opening at the center of the outer face of said hub and to one side of the center of the opposite face of the gear.

The dial post- 12 has its upper end bent or formed at an angle of itoits main portion and its extremity is given a vertically extended parallel-sided form as indicated at 23. In. the case-shown said extremity is substantially rectangular in sec- 7 tion and it slidablyfits into a slot in the head 24; of a bearing member 25, rotatably mounted in and of the gear 21. a

Set in the top face of the gear 15 around the guide post 12 is a hardened bearing ring 26,- and: the post 12 is provided with a vertical tapped passage for a set screw 27 which projects on the under side of the inclined portion of the post 12 and engages the upper surface of the said ring 26;; Itwill be apparent that the set screw 27 provides means for vertically adjusting the post 12 in its bearing, and a second set screw 28 enters the side of the post 1:2 and is adapted to bear against the set screw 27 whereby the latter is positively secured in its adjust-ed position.

An open centered guard plate 29 is suitably secured to the base' piece 3 and provides a shield for the toothed portions of the bevel gears 15 and 21, as clearly illustrated,

With the above described arrangement of parts; power is applied to rotate the cam ring 6 in any of the customary ways, and with it the rotary structure 7 including the post 8 and the gear 15. The yarn a? is fed to the needles of the cylinder 5 and dial 11 through the passage 22 in the gear 21 and the passage 17 in the gear 15.

It will be noted by reference to Fig. 1 that when the inner end of the passage 22 is concentric with the hub 20 in the elevated position overlying the top of the post 12, the passage 17 is at that side of the gear farthest away from the gear 21. \Vith this arrangement, as the passage 17 passes under the post 12, the inner end of the passage 22 also passes under, and the thread is thereby passed ireely around the post. p

When the dial post with its associated parts is to be removed, this may be accomplished with utmost convenience by merely releasing the member 19 from the base piece 3 and releasing the nuts which secure the ring 10 to the post 8. The post with its associated parts may then be liifted from the machine and the separate parts removed as may be desiret.

The deviz-e is an extremely simple one providing for convenient vertical adjustiientof the dial with the set screw 27, and providing also for an extended bearing for the post 12, as previously described, giving great strength and durability.

The simple arrangement of gears and passages also provides for the entire elimation of movable pawls or dogs heretofore employed to prevent rotation of the dial post while pern'iitting free delivery thereto oi the thread required for knitting.

I claim:

1. The combination in a rib knitting machine, of a cylinder, a dial, and means for holdin the dial from turning relatively to the cylinder including a pair of coacting rotary members having relatively fixed axes with the axis of one of said members coinciding with the axis of the dial, and a yarn passage in each of said coacting rotary members t'or cooperatively carrying a thread around the dial holding means.

2, The-combination in a rib knitting machine, of a cylinder, a dial, a rotary structure in which said dial is suspended, means for preventing rotation ofthe dial including a relatively fixed rotary member coactive with the rotary structure from which the dial is suspended, and co-operative yarn guides in said rotary member and in the said rotary structure, for carrying a knitting thread around the suspending means and the rotation preventing means of the dial. 7

I). The combination in a rib knitting machine, ot a cylinder, a rotary yarn guide, a second rotary yarn guide, the axes of rotation of said guides beingat an angle to each other, a dial and means for holding the dial from turning relatively to the cylinder including a member co-axially mounted in and relatively movable about said axis with respect to said second yarn guide, said yarn guides (o-operating to carry a knitting thread around said axes and the dial holding means.

l. The combination in a rib knitting machine, of a cylinder, a dial, a dial post, a yarn guide member rotatable about said post, a

second yarn guide member rotatable at an angle to the first mentioned guide, a member journalled in said second guide and engaging the outer end of said dial post, and yarn passages formed in said yarn guide members for co-op-eratively carrying a knitting thread around the dial post and its engaging member.

7 5. The combination in a rib knitting ma chine, of a cylinder, a dial, a dial post, a yarn guide. member rotatable about said post and having an eccentrically ara'nged yarn pa therein, means for supporting the post of said member, a: second yarn guide member rotatable at an angle to the first-mentioned guide and having an eccentrically arranged yarn passage therein, a

member journaled in said second guide and engaging the outer end of said dial post for preventing rotation of the said post, and means for synchronously rotating said guide members whereby a thread passing through the passage therein is carried around the said post and its engaging member.

6. The combination in a rib knitting machine of a cylinder, a dial, means including a relatively rotary structure and a dial post for supporting the dial, rotary cam mechanism for the cylinder and dial, a rotary member supported by the frame and having a yarn passage therein for guiding the yarn to the needles, with a second yarn guide member rotatable at an angle to the first and having a yarn passage formed therein, means carried by said second yarn guide for preventing rotation of the dial post, and means for synchronizing the motion of the yarn guide members to carry a thread around the said dial 'post and the means which prevent its rotation.

7. The combination in a rib' knitting machine, of a trams, a cylinder, a dial, means including a relatively rotary structurefor supporting the dial, rotary cam mechanism for the cylinder and dial, a rotarymember supported by the frame, with a dial post maintained in a relatively fixed position by said member and preventing the dial from rotating, yarn passages in said rotary structure and said rotary member for guiding the yarn to the neeedles, around the dial post and under the portion thereof which said rotary member engages. v

8. The combination in a rib knitting ma chine, of a cylinder, a dial, a rotary structure for supporting the dial, a yarn guide member carried by the structure coaxial with the dial, a dial post supported in said memher, a second yarn guide member rotatable at an angle to the first-mentioned yarn guide, means carried by the said second yarn guide and engaging the said post to prevent rotation thereof with respect to said supporting structure, and yarn passages formed in said yarn guide members for carrying a knitting thread around and under the dial post engaging means.

9. The combination in a rib knitting machine, of a frame, a cylinder, a dial, a dial post, means including a rotary structure for supporting the dial, rotary cam mechanism for the cylinder and dial, a rotary yarn guide member carried by the said rotary structure, a second rotary yarn guide member carried by the frame, means carried by said second guide member and engaging the said dial post for preventing rotation of the dial, and yarn paisages formed in said yarn guide members for carrying a knitting thread. around said dial post and under the means which prevent rotation of the dial.

10. The combination in a rib knitting machine, of a frame, a cylinder, a dial, a dial post, means including a relatively rotary structure for supporting the dial and having an eccentrically arranged yarn passage formed therein, a rotary yarn guide member carried by the frame and having an eccentrically arranged yarn passage formed therein, a member carried by the said yarn guide member adapted to engage the saic dial post to prevent rotation of the dial, and means for synchronizing; the motions of said rotary elements whereby a thread passing through said yarn passages is carried around the dial post and the engaging member therefor when the elements are rotated.

11. The combination in a rib knitting machine, of a frame, a cylinder, a dial, a dial post, means including a rotary structure for supporting the dial concentric with said dial post and having an eccentric yarn passage formed therein, rotary cam mechanism for the cylinder and dial, a rotary yarn guide member supported by the frame and having an eccentric yarn passage formed therein, a member journaled concentrically in the yarn guide and adapted to engage the said dial post to prevent rotation of the dial, and means for Synchronizing the motions of said rotary elements whereby a thread passing through said yarn passages is carried around said dial post and the engaging member therefor when the elements are rotated.

12. The combination in a rib knitting machine; of a frame, a cylinder, a dial, a dial post, means including a rotary structure for supporting the dial, a yarn guide member in the form of a bevel gear carried'by the said rotary structure concentrically with the dial post, an eccentrically positioned yarn passage in said bevel gear, a second yarn guide member in the form of a gear journaled in the said frame and meshing with the said first gear, an eccentrically positioned yarn passage in said second gear, and a member journaled in said gear and adapted to engage the dial post to prevent rotation of the dial, said yarn passages being so arranged relative to each other that the thread passing therethrough is carried around the dial post and the said engaging member therefor when said gears are rotated.

13. The combination in a rib knitting machine, of a frame, a cylinder, a dial, a dial post. means including a rotary structure for supporting the dail, a yarn passage in said rotary structure, means for adjusting the post vertically in the structure, a rotary yarn guide member having a yarn passage therein and journaled in the frame, a member jonrnaled in the yarn guide member and having a vertical slot engaged by the end of said dial post, and means for synchronizing the rotary motion of said rotary mem-' bers whereby the yarn passages therein are contiguous when passing under the dial post.

14. The combination in a rib knitting machine, of a frame, a cylinder, a dial, means including a post and a rotary structure for sup orting the dial, a bevel gear carried by said structure coaxial withthe dial post, a yarn passage in said gearQ a second bevel gear meshing with the first and journaled in the frame, and a member journaled in said second gear and engaging the dial post to prevent rotation of the said post, said second gear having a yarn guide passage eccentric at least in part to said poet-engaging member and so arranged with respect to the yarn guide passage in said first gear that the two are contiguous when passing under the dial post.

TVALTER LARKIN. 

